Method Detail

• clamp

   final static Double clamp(Double x, Double low, Double high)

  Restrict x to the range low, high.

• wrap

   final static Double wrap(Double n, Double min, Double max)

  Wraps the given value into the inclusive-exclusive interval between min and max.

  Parameters:

  n - The value to wrap.

  min - The minimum.

  max - The maximum.

• mod

   final static Double mod(Double x, Double m)

  Returns the non-negative remainder of x / m.

  Parameters:

  x - The operand.

  m - The modulus.

• mercator

   final static Double mercator(Double lat)

  Returns mercator Y corresponding to latitude. See http://en.wikipedia.org/wiki/Mercator_projection .

• inverseMercator

   final static Double inverseMercator(Double y)

  Returns latitude from mercator Y.

• hav

   final static Double hav(Double x)

  Returns haversine(angle-in-radians). hav(x) == (1 - cos(x)) / 2 == sin(x / 2)^2.

• arcHav

   final static Double arcHav(Double x)

  Computes inverse haversine. Has good numerical stability around 0. arcHav(x) == acos(1 - 2 * x) == 2 * asin(sqrt(x)). The argument must be in 0, 1, and the result is positive.

• sinFromHav

   final static Double sinFromHav(Double h)

• havFromSin

   final static Double havFromSin(Double x)

• sinSumFromHav

   final static Double sinSumFromHav(Double x, Double y)

• havDistance

   final static Double havDistance(Double lat1, Double lat2, Double dLng)

  Returns hav() of distance from (lat1, lng1) to (lat2, lng2) on the unit sphere.

• getEARTH_RADIUS

   final Double getEARTH_RADIUS()

  The earth's radius, in meters. Mean radius as defined by IUGG.